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Now, there are two local binders: let x = ... use x = ... The 'let' binder will create a local definition, type-check it, and assign a name to it. When compiled, it will create 'dup' nodes. The 'use' binder is just an alias. It will not bind a new variable, and, when compiled, will create inline copies. Also, for type-checking, it allows creating aliases that are definitionaly equal for the checker.
9 lines
331 B
Plaintext
9 lines
331 B
Plaintext
Kind.Scope.find
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: ∀(nam: String) ∀(scp: Kind.Scope) Kind.Term
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= λname λscope
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use cond = λbnd (~bnd λx Bool λn λt (String.equal name n))
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use found = (List.find Kind.Binder cond scope)
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use P = λx Kind.Term
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use some = λbnd (~bnd λx Kind.Term λn λt t)
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use none = (Kind.ref name Kind.set)
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(~found P some none) |